CN110479458B - Artificial sand manufacturing process - Google Patents
Artificial sand manufacturing process Download PDFInfo
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- CN110479458B CN110479458B CN201910732721.4A CN201910732721A CN110479458B CN 110479458 B CN110479458 B CN 110479458B CN 201910732721 A CN201910732721 A CN 201910732721A CN 110479458 B CN110479458 B CN 110479458B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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Abstract
The invention relates to the technical field of artificial sand production, in particular to an artificial sand manufacturing process, which reduces the water utilization amount, is easy to control the sand content of various sizes and prevents dust from leaking; the method comprises the following steps: (1) the raw materials are conveyed into a steady flow bin through a second conveyor, and the output quantity of the raw materials is balanced through the steady flow bin; (2) sending the raw material in the step (1) to a first sand making machine through a first conveyor, wherein the first sand making machine processes the raw material into semi-finished sand; (3) the fifth conveyor conveys the semi-finished sand in the step (2) to a first lifter, the first lifter lifts the semi-finished sand to a third conveyor, and the third conveyor conveys the semi-finished sand to a V-shaped sand selecting machine from a feed inlet of the V-shaped sand selecting machine; (4) the V-shaped sand selecting machine divides the semi-finished sand into coarse sand, medium coarse sand, finished sand, fine sand and stone mud powder.
Description
Technical Field
The invention relates to the technical field of artificial sand production, in particular to an artificial sand manufacturing process.
Background
As is well known, the conventional artificial sand manufacturing process: firstly, in order to make the soil content in the manufactured artificial sand meet the requirement of a standard limit value, the stone material for manufacturing the sand is generally washed by clear water to remove the soil carried in the stone material so as to reduce the soil content in the artificial sand, and then the stone material is put into a sand manufacturing machine. After the sand making machine completes sand making, the made sand materials are screened through a metal grid screen, the metal grid screen divides the sand materials into sand material products with different diameters according to different sizes of grids, the sand materials with the sizes meeting the requirement of artificial sand are mixed with water and then stored in a sand yard, and the sand materials with the sizes being too large enter the sand making machine again to make sand, so that the sand making machine completes the making of finished sand in a reciprocating and circulating mode.
The above method has the following disadvantages:
1. the soil is cleaned at the early stage of stones, so that the labor and the time are high, and the water resource waste is serious;
2. the content of sand with various sizes in the sand can not be regulated and controlled, and later detection is needed;
3. and the dust in the sand making process leaks out, and an additional dust removal facility needs to be installed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a manufacturing process of artificial sand, which reduces the water utilization amount, is easy to control the content of sand with various sizes and prevents dust from leaking.
The invention relates to a manufacturing process of artificial sand, which comprises the following steps:
(1) the raw materials are conveyed into a steady flow bin through a second conveyor, and the output quantity of the raw materials is balanced through the steady flow bin;
(2) sending the raw material in the step (1) to a first sand making machine through a first conveyor, wherein the first sand making machine processes the raw material into semi-finished sand;
(3) the fifth conveyor conveys the semi-finished sand in the step (2) to a first lifter, the first lifter lifts the semi-finished sand to a third conveyor, and the third conveyor conveys the semi-finished sand to a V-shaped sand selecting machine from a feed inlet of the V-shaped sand selecting machine;
(4) the V-shaped sand selecting machine divides the semi-finished sand into coarse sand, medium coarse sand, finished sand, fine sand and stone mud powder;
(5) in the step (4), the coarse sand is discharged from a coarse sand outlet of the V-shaped sand selecting machine and then enters a first-stage distribution and adjustment module splitter, the first-stage distribution and adjustment module splitter splits the coarse sand into two parts according to the running conditions of a first sand making machine and a high-speed sand making machine, one part is conveyed to a steady flow bin by a first conveying belt, and the steps (1), (2), (3) and (4) are repeated;
(6) the other part of coarse sand in the step (5) is conveyed into a high-speed sand making machine through a second conveying belt to complete sand making, and then the steps (3) and (4) are carried out;
(7) and (3) the medium coarse sand in the step (4) enters a second-stage distribution and adjustment module splitter after coming out of a coarse sand outlet of the V-shaped sand selecting machine, and the second-stage distribution and adjustment module splitter divides the medium coarse sand into two parts according to the requirement of the content of the medium coarse sand in the fine sand: feeding a part of coarse sand into the high-speed sand making machine by using a second conveying belt, and repeating the step (6);
(8) conveying the coarse sand in the other part in the step (7) to a wet mixing machine by a sixth conveyor;
(9) conveying the finished sand in the step (4) to a wet mixing machine by a sixth conveyor after the finished sand is discharged from a finished sand outlet of the V-shaped sand selecting machine;
(10) blowing the fine sand and the mud stone powder in the step (4) into a powder concentrator through airflow in a V-shaped sand concentrator, conveying the fine sand selected by the powder concentrator to a sixth conveyor through a pipeline, and conveying the fine sand to a wet mixing machine through the sixth conveyor;
(11) in the step (10), the powder concentrator sorts out mud stone powder, the mud stone powder is blown to a cyclone cylinder by airflow through a pipeline, the mud stone powder is collected by the cyclone cylinder and then sent to the superfine powder concentrator, the superfine powder concentrator sorts out stone powder, the stone powder is blown to a third-stage distribution and adjustment module splitter by the pipeline, the third-stage distribution and adjustment module splitter splits the stone powder into two parts according to the requirement of the content of the stone powder in fine sand, one part of the stone powder is sent to the wet mixer by a sixth conveyor, and the other part of the stone powder is sent to a stone powder warehouse by the pipeline;
(12) the material in the steps (8), (9) and (10) is mixed with moisture by a moisture mixer and then is sent to a refined sand storage tank by a second hoisting machine and a fourth conveyor;
(13) and (3) after the superfine powder concentrator in the step (11) selects mud powder, blowing the mud powder into a bag-type dust remover through a pipeline by air, and after the bag-type dust remover acts, sending the mud powder into a mud powder warehouse.
According to the manufacturing process of the artificial sand, the two groups of the cyclones are provided.
The invention relates to a manufacturing process of artificial sand, wherein a V-shaped sand selecting machine is provided with a first fan, one part of air generated by the first fan is blown into the V-shaped sand selecting machine from an air inlet of the V-shaped sand selecting machine through a pipeline to generate airflow, the airflow blows fine sand and mud stone powder, the other part of air is blown into a bag-type dust remover from a pipeline between an ultrafine powder selecting machine and the bag-type dust remover through a pipeline, negative pressure generated by the first fan is connected with an air outlet of a cyclone cylinder through a pipeline, the negative pressure forms airflow in the cyclone cylinder, and a second fan is connected with an air outlet of the bag-type dust remover through a pipeline, so that a ventilation system of the whole sand manufacturing system forms negative pressure.
Compared with the prior art, the invention has the beneficial effects that: by carrying out the examples and comparative examples, the invention has the following advantages: 1. grading adjustment control technology: the system is provided with a special production loop consisting of grading adjustment equipment, so that the fineness modulus of the machine-made sand can be adjusted according to the set requirement. Through the processing of a special production loop of the process, the yield of the machine-made sand can be adjusted, the machine-made sand can be produced completely, and the yield of the sandstone can be adjusted in proportion, so that the sandstone finished product can be produced in a balanced manner according to the requirements. The particle size of the sand finished product is controllable and the gradation is adjustable: the raw sand can be separated into coarse sand, medium coarse sand, finished sand, fine sand and mud stone powder by winnowing, and the sand required by users and the prepared sand can be prepared by reasonable matching. The sand and stone gradation can be conveniently adjusted by adjusting the rotating speed of the rotor and the air quantity of the fan.
2. The stone powder content control technology comprises the following steps: the system adopts the sorting airflow of the variable-frequency control sand-stone powder separating equipment, so that the stone powder in the finished product is easily separated, the powder removing efficiency reaches more than 85-90%, and after the machine-made sand required to be treated is sorted, the particles of the stone powder in the finished product sand can be controlled within the range of less than 3%. The distribution range of the particles can be arbitrarily reduced or enlarged through the rotation speed adjustment of the rotor, the dynamic control of the content of the stone powder is realized, and the content of the powder can be controlled according to the requirement.
3. The mud and stone powder separation technology comprises the following steps: tests show that the stone powder particles smaller than 75 microns are mainly distributed over 16 microns, the mud particles smaller than 75 microns are mainly distributed under 16 microns, the average particle size of the stone powder is nearly 4 times of that of the mud, and the high-efficiency separation of the mud powder and the stone powder particles is realized by using the 16 microns particles as the extension standard through an ultrafine powder concentrator.
4. Green and environment-friendly: the whole dust-containing loop of the process system is wrapped by the ventilating duct, the double fans are matched, one fan is responsible for negative pressure maintenance of the system, full negative pressure operation of the whole ventilating system is achieved, dust is not leaked, and the whole production process is green and environment-friendly.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
in the drawings, the reference numbers: 1. a first hoist; 2. a first conveyor; 3. a steady flow bin; 4. a second conveyor; 5. a first conveyor belt; 6. a V-shaped sand selecting machine; 7. a third conveyor; 8. a first fan; 9. selecting a powder machine; 10. a cyclone; 11. superfine powder selecting machine; 12. a bag-type dust collector; 13. a second fan; 14. a mud powder storehouse; 15. a stone powder warehouse; 16. a fourth conveyor; 17. a fine sand storage tank; 18. a second hoist; 19. a fifth conveyor; 20. a first sand making machine; 21. a second conveyor belt; 22. a high-speed sand making machine; 23. a sixth conveyor; 24. a wet mixing machine; 25. the first-stage distribution and adjustment module splitter; 26. the second stage is provided with an adjusting module splitter; 27. and the third stage is provided with an adjusting module flow divider.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example (b):
(1) the raw materials are conveyed into a steady flow bin through a second conveyor, and the output quantity of the raw materials is balanced through the steady flow bin;
(2) sending the raw materials in the step (1) to a first sand making machine through a first conveyor, wherein the first sand making machine processes the raw materials into semi-finished sand;
(3) the fifth conveyor conveys the semi-finished sand in the step (2) to a first lifter, the first lifter lifts the semi-finished sand to a third conveyor, and the third conveyor conveys the semi-finished sand to a V-shaped sand selecting machine from a feed inlet of the V-shaped sand selecting machine;
(4) the V-shaped sand selecting machine divides the semi-finished sand into coarse sand, medium coarse sand, finished sand, fine sand and stone mud powder;
(5) in the step (4), the coarse sand is discharged from a coarse sand outlet of the V-shaped sand selecting machine and then enters a first-stage distribution and adjustment module splitter, the first-stage distribution and adjustment module splitter splits the coarse sand into two parts according to the running conditions of a first sand making machine and a high-speed sand making machine, one part is conveyed to a steady flow bin by a first conveying belt, and the steps (1), (2), (3) and (4) are repeated;
(6) the other part of coarse sand in the step (5) is sent into a high-speed sand making machine through a second conveying belt to complete sand making, and then the steps (3) and (4) are carried out;
(7) and (4) the medium coarse sand in the step (4) enters a second-stage distribution and adjustment module splitter after coming out of a coarse sand outlet of the V-shaped sand selecting machine, and the second-stage distribution and adjustment module splitter divides the medium coarse sand into two parts according to the requirement of the content of the medium coarse sand in the fine sand: sending part of the coarse sand into a high-speed sand making machine by a second conveyer belt, and repeating the step (6);
(8) conveying the coarse sand in the other part in the step (7) to a wet mixing machine by a sixth conveyor;
(9) conveying the finished sand in the step (4) to a wet mixing machine by a sixth conveyor after the finished sand is discharged from a finished sand outlet of the V-shaped sand selecting machine;
(10) blowing the fine sand and the mud stone powder in the step (4) into a powder concentrator through airflow in a V-shaped sand concentrator, conveying the fine sand selected by the powder concentrator to a sixth conveyor through a pipeline, and conveying the fine sand to a wet mixing machine through the sixth conveyor;
(11) in the step (10), the powder concentrator sorts out mud stone powder, the mud stone powder is blown to two sets of cyclone cylinders by airflow through a pipeline, the mud stone powder is collected by the two sets of cyclone cylinders and then is sent to the superfine powder concentrator, the superfine powder concentrator sorts out stone powder, the stone powder is blown to a third-stage distribution and adjustment module splitter by the pipeline, the third-stage distribution and adjustment module splitter splits the stone powder into two parts according to the requirement of the content of the stone powder in fine sand, one part of the stone powder is sent to the wet mixer by a sixth conveyor, and the other part of the stone powder is sent to a stone powder warehouse by the pipeline;
(12) the material in the steps (8), (9) and (10) is mixed with moisture by a moisture mixer and then is sent to a refined sand storage tank by a second hoisting machine and a fourth conveyor;
(13) and (4) after the mud powder is selected by the superfine powder selecting machine in the step (11), blowing the mud powder into a bag-type dust remover through a pipeline by air, and after the mud powder acts in the bag-type dust remover, sending the mud powder into a mud powder warehouse.
The V-shaped sand selecting machine is provided with a first fan, one part of air generated by the first fan is blown into the V-shaped sand selecting machine through an air inlet of the V-shaped sand selecting machine through a pipeline to generate air flow, fine sand and mud stone powder are blown by the air flow, the other part of air is blown into the bag-type dust remover through a pipeline between the superfine powder selecting machine and the bag-type dust remover, negative pressure generated by the first fan is connected with air outlets of the two sets of cyclone cylinders through the pipeline, the negative pressure forms air flow in the two sets of cyclone cylinders, and the second fan is connected with an air outlet of the bag-type dust remover through the pipeline so that a ventilation system of the whole sand making system forms negative pressure.
Comparative example:
firstly, in order to make the soil content in the manufactured artificial sand meet the requirement of a standard limit value, the stone material for manufacturing the sand is generally washed by clear water to remove the soil carried in the stone material so as to reduce the soil content in the artificial sand, and then the stone material is put into a sand manufacturing machine. After the sand making machine completes sand making, the made sand materials are screened through a metal grid screen, the metal grid screen divides the sand materials into sand material products with different diameters according to different sizes of grids, the sand materials with the sizes meeting the requirement of artificial sand are mixed with water and then stored in a sand yard, and the sand materials with the sizes being too large enter the sand making machine again to make sand, so that the sand making machine completes the making of finished sand in a reciprocating and circulating mode.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The artificial sand manufacturing process is characterized by comprising the following steps:
(1) the raw materials are conveyed into the steady flow bin (3) through the second conveyor (4), and the output of the raw materials is balanced through the steady flow bin (3);
(2) sending the raw materials in the step (1) to a first sand making machine (20) through a first conveyor (2), wherein the first sand making machine (20) processes the raw materials into semi-finished sand;
(3) the fifth conveyor (19) sends the semi-finished sand in the step (2) to the first hoister (1), the first hoister (1) hoists the semi-finished sand to the third conveyor (7), and the third conveyor (7) sends the semi-finished sand to the V-shaped sand selector (6) from a feeding hole of the V-shaped sand selector (6);
(4) the V-shaped sand selecting machine (6) divides the semi-finished sand into coarse sand, medium coarse sand, finished sand, fine sand and stone mud powder;
(5) in the step (4), the coarse sand is discharged from a coarse sand outlet of the V-shaped sand selecting machine (6) and then enters a first-stage distribution and adjustment module splitter (25), the first-stage distribution and adjustment module splitter (25) splits the coarse sand into two parts according to the running conditions of the first sand making machine (20) and the high-speed sand making machine (22), one part is conveyed to the steady flow bin (3) through the first conveying belt (5), and the steps (1), (2), (3) and (4) are repeated;
(6) the other part of coarse sand in the step (5) is sent into a high-speed sand making machine (22) through a second conveying belt (21) to complete sand making, and then the steps (3) and (4) are carried out;
(7) the medium coarse sand in the step (4) enters a second-stage distribution and adjustment module splitter (26) after coming out of a coarse sand outlet of the V-shaped sand selecting machine (6), and the second-stage distribution and adjustment module splitter (26) splits the medium coarse sand into two parts according to the requirement of the content of the medium coarse sand in the fine sand: feeding a part of the coarse sand into a high-speed sand making machine (22) by a second conveying belt (21), and repeating the step (6);
(8) conveying the coarse sand in the other part in the step (7) to a wet mixing machine (24) by a sixth conveyor (23);
(9) the finished product sand in the step (4) is delivered out of a finished product sand outlet of the V-shaped sand selecting machine (6) and then is conveyed to a wet mixing machine (24) by a sixth conveyor (23);
(10) blowing the fine sand and the mud stone powder in the step (4) into a powder concentrator (9) through airflow in a V-shaped sand concentrator (6) through a pipeline, conveying the selected fine sand to a sixth conveyor (23) through the pipeline by the powder concentrator (9), and conveying the fine sand to a wet mixing machine (24) by the sixth conveyor (23);
(11) in the step (10), the powder concentrator (9) separates mud and stone powder and blows the mud and stone powder to the cyclone cylinder (10) through airflow through a pipeline, the mud and stone powder is collected by the cyclone cylinder (10) and then sent to the superfine powder concentrator (11), the superfine powder concentrator (11) separates stone powder and blows the stone powder to the third-stage distribution and adjustment module splitter (27) through a pipeline, the third-stage distribution and adjustment module splitter (27) splits the stone powder into two parts according to the requirement of the content of the stone powder in fine sand, one part of the stone powder is sent to the wet mixer (24) through the sixth conveyor (23), and the other part of the stone powder is sent to the stone powder warehouse (15) through a pipeline;
(12) after the materials in the steps (8), (9) and (10) are mixed with moisture by a moisture mixing machine (24), the mixture is conveyed to a fine sand storage tank (17) through a second hoisting machine (18) and a fourth conveyor (16);
(13) and (3) after the mud powder is selected by the superfine powder selecting machine (11) in the step (11), blowing the mud powder into the bag-type dust remover (12) through a pipeline by air, and after the mud powder acts in the bag-type dust remover (12), sending the mud powder into a mud powder warehouse (14).
2. A process for the manufacture of artificial sand according to claim 1, wherein there are two groups of cyclones (10).
3. The artificial sand manufacturing process according to claim 2, wherein the V-shaped sand selecting machine (6) is provided with a first fan (8), a part of air generated by the first fan (8) is blown into the V-shaped sand selecting machine (6) from an air inlet of the V-shaped sand selecting machine (6) through a pipeline to generate airflow, the airflow blows fine sand and mud stone powder, the other part of air is blown into the cloth bag dust remover (12) from a pipeline between the superfine powder selecting machine (11) and the cloth bag dust remover (12) through a pipeline, negative pressure generated by the first fan (8) is connected with an air outlet of the cyclone cylinder (10) through a pipeline, the negative pressure forms airflow in the cyclone cylinder (10), and the second fan (13) is connected with an air outlet of the cloth bag dust remover (12) through a pipeline, so that a ventilation system of the whole sand manufacturing system forms negative pressure.
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| CN201910732721.4A CN110479458B (en) | 2019-08-09 | 2019-08-09 | Artificial sand manufacturing process |
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| CN112892814A (en) * | 2020-12-24 | 2021-06-04 | 中国水利水电第九工程局有限公司 | Pneumatic powder removing process in manual sand making process |
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